Details
| Original language | English |
|---|---|
| Article number | 454204 |
| Journal | Journal of Physics Condensed Matter |
| Volume | 20 |
| Issue number | 45 |
| Publication status | Published - 12 Nov 2008 |
Abstract
Measuring shot noise and electron counting are both methods for accessing information about the dynamics of electronic transport through a system of interest. Here we apply these tools to examine electronic transport through coupled quantum dot systems. In the first part of the paper we show temperature dependent shot noise measurements for a strongly coupled double-quantum-dot system. We observe super-Poissonian shot noise as expected for coherent inter-dot coupling and asymmetric lead tunnelling rates. In the second part we apply direct electron counting to examine a weakly coupled triple-dot system. A quantum point contact placed near the triple dot allows us to monitor electron hops between the dots and the leads. This allows us to, e.g., individually characterize different tunnelling rates relevant in the system.
ASJC Scopus subject areas
- Materials Science(all)
- General Materials Science
- Physics and Astronomy(all)
- Condensed Matter Physics
Cite this
- Standard
- Harvard
- Apa
- Vancouver
- BibTeX
- RIS
In: Journal of Physics Condensed Matter, Vol. 20, No. 45, 454204, 12.11.2008.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Shot noise and electron counting measurements on coupled quantum dot systems
AU - Hohls, F.
AU - Maire, N.
AU - Fricke, C.
AU - Rogge, M. C.
AU - Haug, R. J.
PY - 2008/11/12
Y1 - 2008/11/12
N2 - Measuring shot noise and electron counting are both methods for accessing information about the dynamics of electronic transport through a system of interest. Here we apply these tools to examine electronic transport through coupled quantum dot systems. In the first part of the paper we show temperature dependent shot noise measurements for a strongly coupled double-quantum-dot system. We observe super-Poissonian shot noise as expected for coherent inter-dot coupling and asymmetric lead tunnelling rates. In the second part we apply direct electron counting to examine a weakly coupled triple-dot system. A quantum point contact placed near the triple dot allows us to monitor electron hops between the dots and the leads. This allows us to, e.g., individually characterize different tunnelling rates relevant in the system.
AB - Measuring shot noise and electron counting are both methods for accessing information about the dynamics of electronic transport through a system of interest. Here we apply these tools to examine electronic transport through coupled quantum dot systems. In the first part of the paper we show temperature dependent shot noise measurements for a strongly coupled double-quantum-dot system. We observe super-Poissonian shot noise as expected for coherent inter-dot coupling and asymmetric lead tunnelling rates. In the second part we apply direct electron counting to examine a weakly coupled triple-dot system. A quantum point contact placed near the triple dot allows us to monitor electron hops between the dots and the leads. This allows us to, e.g., individually characterize different tunnelling rates relevant in the system.
UR - http://www.scopus.com/inward/record.url?scp=58149335174&partnerID=8YFLogxK
U2 - 10.1088/0953-8984/20/45/454204
DO - 10.1088/0953-8984/20/45/454204
M3 - Article
AN - SCOPUS:58149335174
VL - 20
JO - Journal of Physics Condensed Matter
JF - Journal of Physics Condensed Matter
SN - 0953-8984
IS - 45
M1 - 454204
ER -